Osan monthly weather averages

Contents

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Osan

Osan average temperature chart (Celsius) Osan average temperature chart (Fahrenheit)
Average monthly temperatures in Osan (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 1.2 3.5 9.7 17.5 22.8 26.5 28.7 29.6 25.2 19.4 11.2 4
°F 34.2 38.3 49.5 63.5 73.1 79.7 83.7 85.3 77.4 66.8 52.2 39.2

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Osan monthly rainfall chart (mm) Osan monthly rainfall chart (inches)
Average monthly rainfall in Osan (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 27 28 51 93 86 133 309 268 143 54 53 25
inches 1.1 1.1 2 3.7 3.4 5.2 12.2 10.6 5.6 2.1 2.1 1
Rainy days 8 7 7 8 8 10 15 13 8 7 9 9

Average annual rainfall in Osan: 1433.766mm (564.5 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Osan

Osan average daily sunshine chart
Average daily sunshine Osan
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.3 7 7.8 8.3 8.9 8.3 6.5 7.3 7.5 7.5 6 5.9

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Osan average minimum / maximum temperatures (Celsius) Osan average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Osan (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -8.7 -6.4 -1.2 5 10.9 16.5 21.1 21.2 14.8 7.2 0.8 -5.7
Max °C 1.5 3.8 10 17.8 23.1 26.8 28.9 29.8 25.5 19.7 11.5 4.3
Min °F 16.4 20.6 29.8 41 51.6 61.6 70 70.2 58.6 44.9 33.4 21.8
Max °F 25.5 29.7 39.9 52.5 62.6 70.9 77 77.9 68.2 56.1 43 30.7

Sea temperature

The graph below shows the average sea temperature.

Osan average sea temperature chart (Celsius) Osan average sea temperature chart (Fahrenheit)
Average sea temperature around Osan in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.6 6.1 6.3 8.8 13 18.3 22.5 25 22.9 19.3 14.8 10.7
°F 45.6 42.9 43.3 47.9 55.3 65 72.4 77 73.3 66.7 58.6 51.3

Wind speed

The graph below shows the average wind speed.

Osan average winspeed by month (km/h) Osan average winspeed by month (mph)
Average wind speed in Osan (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 6 7 7 8 7 6 6 5 5 5 5 5
mph 4 4 5 5 4 4 4 3 3 3 3 3

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Osan relative humidity averages
Average relative humidity in Osan
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
72% 70% 69% 67% 70% 75% 82% 81% 79% 76% 74% 73%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Osan weather stats

Osan weather statistics
Hottest month: August 29.6°C 85.3°F
Driest month: December 25mm 1ins
Sunniest month: October 7.5hrs
Coldest month: January 1.2°C 34.2°F
Wettest month: July 309mm 12.2ins
Warmest sea: August 25°C 77°F
Map showing location of Osan (37.15222, 127.07056) Osan map pin © Google

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